Typewriting-machine



J. WALDHEIM.

TYPEWRITING MACHINE. APPLICATION FILED DEC. H5, 1918.

Patented Au 19,1920.

2 SHEETS-SHEET l- J. WALDHEIM.

TYPEWRITING MACHINE.

APPLICATION FILED DEC. 16, 1918.

1,349, 174;, I v Patented Aug. 10, 1 920.

2 SHEETS-SHEET 2.

UNITED STATES PATENT OFFICE.

JOHN WALDHEIM, 0F ELIZABETH; NEXV JERSEY, ASSIGNOR TO UNDERWOOD TYPE- WRITER COMPANY, OF NEW YORK, N. Y., A CORPORATION OF DELAWARE.

TYPEWRITIN (it-MACHINE.

Specification of Letters Patent.

Patented Aug. 10, 1920.

Application filed December 16, 1918. Serial No. 266,950.

To all whom it may concern:

Be it known that I, JOHN WALDHEIM, a citizen of the United States, residing in Elizabeth, in the county of Union and State of New Jersey, have invented certain new and useful Improvements in Typewriting- Machines, of which the following is a specification.

This invention relates to typewriting machines, and is herein illustrated as applied to a typewriting machine built much along the lines of the Underwood standard typewriting machine. The machine as illustrated is especially adapted to be used for writing stencil cards, on which it is desired to cut a stencil upon the thin body portion of the card, and to typewrite in ink upon a reinforced or thicker portion of the card.

One desideratum in a machine of this character is that, when a stencil card is inserted, the mechanism will automatically effect adjustments to cause the types to strike through the usual typewriter ribbon and thereby write record memoranda upon a thicker portion of the card. Another desideratum is that the typewriter ribbon shall be moved to, or remain at, ineffective or silenced position when writing is done upon the thinner or stencil part of the card, since the ribbon interferes with the proper cutting of the stencil.

According to the present invention, this control of the printing function of the ribbon may be taken care of automatically, thus avoiding the troubles which often arise in an ordinary machine due to the fact that the typist is likely to forget to silence the ribbon-vibrator at the proper time.

In embodying these features, I adopt a special form for some parts of the typewriter mechanism and provide a feeler, which controls the function of the ribbon. This feeler travels with the typewriter carriage, thereby avoiding the wear upon the surface of the stencil, which might otherwise result from contact of the feeler.

To connect this traveling feeler to the ribbon-controlling devices, I have found it advantageous to provide a bail extending over a distance equal to the maximum travel of the typewriter carriage, or even over the whole length of the carriage, so that the feeler may be effective thereon at any point,

thereby enabling the connection between the feeler and the bail to be simple.

Many of the features of the mechanism, including the general form of the stencilcard-carrier, are herein illustrated as modified from the patent to Wernery, No. 1,214,? 33.

Other features and advantages will hereinafter appear.

In the accompanying drawings,

Figure l is a sectional side View of a modified Underwood typewriting machine showing my invention as applied thereto.

Fig. 2 is a sectional view of the same parts, except that the feeler is shown in contact with the thin portion of a stencil card, instead of the thick portion, as shown in Fig. 1; the other parts, including the ribbon-vibrating mechanism, being correspondingly positioned.

Fig. 3 is a perspective view of the carriage, many parts being broken away or only shown diagrammatically.

The usual keys 1 of the Underwood typewriting machine are mounted on the front ends of key-levers 2, so that, when depressed, they swing type-bars 3 upwardly and rearwardly by means of sub-levers 4, to cause single case types 5 to print against the front face of a platen 6, which is rotatably mounted in a carriage frame comprising end plates 7 and 8.

The platen, as herein illustrated, is only slightly longer than the stencil card 9 upon which the writing is to be done, and the platen is adapted to be rotated by the usual knob 10, or the usual line-space lever 11, through the usual connections, which are only partly shown.

To insert the stencil card 9, the typewriter carriage may be at any position in its travel, and the card is inserted from the front between the platen 6 and the front upper feed rolls 12, which are journaled on the ends of rock arms 13, which, in turn, are fast on a rock shaft 14 ournaled in the carriage frame and constantly drawn upon by a spring 15. This spring is anchored to a post 16 in the end plate 7, and draws on a rock arm 17 fast on the shaft 14, so as to constantly hold the feed rolls 12 against the platen. Vhen the stencil card has been pushed down to this position, the platen 'may be turned rearwardly by means of the i the card 9. Usually the size of the frame 18 is so adjusted tothe size of card to be used,

that'when a card 9 rests at the bottom of the frame, as seen in Fig. 1, the solid top 22 of the card brings its top line to the printing point, this solid top being adapted to receive whatever descriptive matter or memoranda should appear on the stencil card.

The frame 18 is fast to a bar 23 which extends from the end of the frame 18 to the end of plate 7 of the carriage, and also to a similar bar 24 extending to the end plate 8 of the carriage, these bars being provided with turned-up ends 25 by which they are riveted or screwed to the end plates 7 and 8. The frame 18 slopes rearwardly slightly, as best seen in Figs. 1 and 2, with the result that the stencil card 9 is bent close against the platen at its printing point by the rolls 12, which are set slightly above the center line of the platen.

For writing upon the card 9, the types strike through a ribbon 26 threaded in the usual manner through the ribbon-carrier 26, which is pivoted to a ribbon-vibrating lever 27, the latter being bent downwardly, as seen in Figs. 1 and 2, so as to clear the lower end of the'casing 18.

In order to feed along the typewriter carriage'and to operate the ribbon-vibrating lever 27, the type bars 3 are provided with the usual heels 28, which, as the type-bars rise, are adapted to strike a universal bar 29 and move it rearwardly, so as to vibrate the usual dogs 30 alternately into engagement with the escapement wheel 31, which is connected in the usual manner to the pinion 32 meshing with the rack 33 upon the typewriter carriage. In order to enable the universal bar to clear the casing 18, it comprises a narrow U-shaped bend 34 intermediate its front and rear. T 0 enable the universal .bar to operate the ribbon, there is fast upon the universal bar a bracket 35 having pivoted thereto at 36 a vibrator hook 37, which comprises a slot 38 adapted to engage a pin 39 upon the upper end of the ribbon-vibrator 27, with the result that the backward movement of the universal bar will draw the hook 37 rearwardly and thereby drag the pin 39 rearwardly, thus raising the front end of the vibrator 27 and by it the ribbon-carrier 26 7 As is customary in Underwood typewriting machines, the ribbon-vibrator'is vibratedonly when it is desired to print through the ribbon, but, when stenciling is done, the vibrator 27 should be silenced. To effect this silencing, the hook 37 comprises a slot 40, in which rides abail 41 which is adapted to lift the hook, so as to carry it clear of the pin 39, with the result that the universal bar, if moved rearwardly by a type-bar, will move idly, 6., without moving the pin 39,

the typewriter carriage, as shown at 44;

said arms extending forwardly, so that they may be regarded as rearward extensions of a transverse .bail 45, which is adapted to be raised or lowered in order to raise or lower the bail 41. To enable the bail 45 to be thus raised or lowered automatically, there is provided a feeler" 46, pivoted at 47 upon a forwardly-extending bracket 48 fast to the frontbar 49 of the typewriter carriage, so that the feeler 46 will always travel with the carriage. This feeler is adapted to bear against the stencil card 9 or other worksheet, at approximately the printing line, and to be moved outwardly from the F 2 position to the Fig. 1 position, whenever a thick portion of the stencil .card'comes between the feeler 46 and the platen 6. This moving outward of the feeler 46 swings the hooki37 to the Fig. 1 position, with the result that the ribbon-vibrator 27 is then vibrated by the actionof the type-bars.

The connections between the feeler 46 and the bail 45 iii-elude the rock shaft 47, by which the feeler is journaled upon the bracket 48, and a cam-plate 50 fast upon said rock shaft, so that it always rocks with the feeler 46. The cam-plate comprises a rearward projection 51, by which, when the feeler 46 is moved outward by the thick portion of the stencil card against the tension of the spring 52, the bail 45 is cammed downwardly, thereby carrying the hook 37 to the position seen in Fig. 1, when it engages the pin 39. If now the stencil card 9 is moved upward until the feeler 46 enters the depression or opening 46 of the stencil card 9, it bears against the thin portion 21 or stencil proper of the stencil card 9, and the feeler is then swung rearwardly by its spring 52, thereby swinging the cam-plate 5O forwardly and releasing the bail 45, with the result that the hooleoperating bail 41 is lifted, because the spring 53 swings up the arms 43, thereby lifting the bail 41.

The feeler 46, as herein shown, is in the nature of a finger having a blunt point, which is short. This enables the point to approach closely to the type-guide 54 without interfering with the vibrating ribbon, thus avoiding the eXt-raspacerequired by a cpl roller, which, however, may advantageously bevused if the stencil card is considerably wider than the length of the typewritten line to be placed thereupon, in which case the roller would not come too near the ribbon.

In order to prevent the finger or teeler l6 from being injured by strikingthe raised edge of the stencil card 9 at the edge 55 oi the stencil surface proper, and to prevent the ieeler from marring the stencil card, the machine may be provided with any usual or suitable margin-stops (not shown) which will limit the throw of the carriage.

In order to make the hook ride quietly during the ordinary operation of typewriting, the slot 40 may comprise not only a cam-raising portion 56, but also a dwell 57, in which latter the bail e1 normally rests, the dwell being so proportioned that the hook 37, in the ordinary operation of typev iting, will move backwardly and forwardly substantially without vertical vibration, thus eliminating wear on the pin 39, as well as eliminating noise, In order to bring the bail i -5 clear of the bars 28, the hookcontrolling bail 41 may be mounted in downwardly-extending ears 58, thus enabling the arms 43 to be raised to any desired extent to keep th m clear 01" the bars 23.

Variations may be resorted to within the scope of the invention, and portions oi the improvements may be used without others.

Having thus described my invention, I claim:

1. In a typewritingmachine, the combination with a platen and types for printing upon said platen, of a ribbon-vibrating mechanism adapted to operate at a typostroke, means for silencino' said vibrating mechanism, and a device adapted to be con trolled by a work-sheet upon which the printing is being done, to automatically make aid vibrating mechanism effective or ineffective.

2. In a typewriting machine, the combination with a traveling platen carriage and types for printing upon the platen, of a ribbonvibrating mechanism, relatively to which the carriage travels, adapted to be operated at a type-stroke, and a device adapted to be controlled by a work-sheet upon which the printing is being done, to automatically make said vibrating mechanism effective or ineffective, said device comprisin a teeler traveling with the typewriter carriage to bear against the worksheet.

3. In a typewriting machine, the combination with a ribbon-vibrator and a universal bar adapted to be operated at typestrokes. oi a hook pivoted upon said universal bar, a pin upon said ribbon-vibrator adapted to be .igaged by said hook to vibrate the ribbon, said hook comprising a slot, a bail passing through said slot and traveling with the typewriter carriage, and means for rocking said bail upon the carriage to move the hook to or from effective position.

4. In a typewriting machine comprising a carriage, the combination with a ribbonvibrator and a universal bar adapted to be operated at type-strokes, of a hook pivoted upon said universal bar, a pin upon said ribbon-vibrator adapted to be engaged by said hook to vibrate the ribbon, said hook comprising a slot, a bail passing through said slot and traveling with the typewriter carriage, means for rocking said bail upon the carriage to move the hook to or from ellective position, a platen adapted to hold a work-sheet, and a feeler adapted to bear upon the work-sheet upon the platen to control said bail.

5. In a typewriting machine comprising a carriage, the combination with a ribbonvibrator and a universal bar adapted to be operated at type-strokes, of a hook pivoted upon said universal bar, a pin upon said ribbon-vibrator adapted to be engaged by said hook to vibrate the ribbon, said hook comprising a slot, a bail passing through said slot and traveling with the typewriter carriage, means for rocking said bail upon the carriage to move the hook to or from effective position, a platen adapted to hold a work-sheet, rock-arms upon which said bail is mounted, a second bail connecting said rock-arms, and a 'feeler adapted to bear against the surface of the work-sheet upon said platen to move said second bail to po sition the hook,

6. In a typewriting machine comprising carriage, the combination with a ribbonvibrator and a universal bar adapted to be operated at typestrokes, of a hook pivoted upon said universal. bar, a pin upon said ribbon-vibrator adapted to be engaged by said hook to vibrate the ribbon, said hook comprising a slot, a bail passing through said slot and traveling with the typewriter carriage, means for rocking said bail upon the carriage to move the hook to or from effective position, a platen adapted to hold a work-sheet, rockarms upon which said bail is mounted, a second bail connecting said rock-arms, a feeler adapted to bear against the surface of the work-sheet upon said platen to move said second bail to position the hook in engagement with the pin, and a spring normally holding the hook clear of the pin.

7. In a typewriting machine, the combination with a traveling platen carriage and types for printing upon the platen, of a ribbonwibrator adapted to operate at a type-stroke, a feeler adapted to bear against a work-sheet upon said platen, and bail adapted to silence said vibrator extending along the travel of said carriage and adapted to be moved by said feeler to and from silencing position.

8. In a typewriting machine, the combination with a traveling platen and types for printing upon said platen, of a ribbonvibrator adapted to operate at a type-stroke,

a universal bar operated at a type-stroke, a pin upon said vibrator, a shiftable device connected tosaid universal bar by which the universal bar may engage the pin to vibrate the vibrator, a feeler adapted to engage a work-piece lying against the 'platen, and means whereby the feeler may move the device into and out of engagement with the pin. V

,9. In a typewriting machine, the combination with a traveling platen carriage and types for printing upon the platen, of a ribbon-vibrator adapted to operate at a type-stroke, a universal bar operated at a type-stroke, a pin upon said vibrator, a shiftable device connected to said universal bar by which'the universal bar may engage the pin to vibrate the vibrator, a feeler adapted to engage a work-piece lying against the platen, and. a bail traveling with the typewriter carriage and operated vice into and out of engagement with the pin, a bracket traveling with the platen upon which said feeler is journaled, a rockshaft extending from said feeler, and a cam extending from said rock-shaft for operating said bail.

' 11. In a typewriting machine, the combination with a traveling platen carriage and types for printing upon the platen, of a ribbon-vibrating mechanism relatively to which the carriage travels, adapted to be operated at a type-stroke, a holder for holding a card against the platen, a feeler adjacent one side of the holder adapted to bear against the card, and means whereby the feeler may silence said ribbon-vibrating mechanism. 7

12. In atypewriting machine, the combination with a traveling platen carriage and types for printing upon the platen, of

a ribbon-vibrating mechanism relatively to which the carriage travels and adapted to be operated at a type-stroke, a holder for holding a card against the platen, a feeler adjacent one side of the holder adapted to bear against the card, a bail, a cam fast to said feeler adapted to operate said bail, and means whereby said bail is adapted to silence the ribbon-vibrating mechanism.

13. In a typewriting machine, the combination with a traveling platen carriage and types for printing upon the platen, of

a ribbon-Vibrating mechanism relatively to which the carriage travels, adapted to be operated at a type-stroke, a holder for holding a card against the platen, a feeler adjacent one side of the holder adapted to bear against the card, a bail, a cam fast to said feeler adapted to operate said bail, and a second bail fast to saidfirst bail and engaging said vibrating mechanism .to control it.

14. In a typewriting machine, the combination with a traveling platen carriage and types for printing upon the platen, of a ribbon-vibrator adapted to operate at a type-stroke, a feeler adapted to bear against a work-piece lying against said platen, and a bail pivoted to said carriage adapted to control said vibrator and extending adja cent said feeler to be moved thereby.

15. In a typewriting machine, the combination with a traveling platen carriage and 7 types for printing upon the platen, of a ribbon-vibrator adapted to be operated at a type-stroke, a feeler traveling with said carriage, a bail pivoted upon said carriage eX- tending along the platen and adapted to be operated by said feeler, a cam fast to the feeler for operating the bail, a universal bar, and a device connected to said universal bar adapted to be moved by said bail to connect the universal bar to the vibrator at will.

16. In a typewriting machine, the combination with a ribbon-vibrator and a universal bar adapted to be operated at typestrokes, of a hook pivoted upon said universal bar, a pin upon said ribbon-vibrator adapted to be engaged by said hook to vibrate the ribbon, said hook comprising a slot having a dwell, a bail passing through said slot and traveling with the typewriter carriage and resting in the dwell during writing through the ribbon, and means for rocking said bail upon the carriage to move the hook to or from effective position.

17. In a typewriting machine comprising a carriage, the combination with a ribbon-vibrator and a universal bar adapted to be operated at type-strokes, of a hook pivoted upon said universal bar, a pin upon said ribbonvibrator adapted to be engaged by said hook to vibrate the ribbon, said hook comprising a slot having a dwell, a bail passing through said slot and traveling with the typewriter carriage and resting in the dwell during writing through the ribbon, means for rocking said bail upon the carriage to move the hook to or from effective position, a platen adapted to hold a work-sheet, and a feeler adapted to bear upon the work-sheet upon the platen to control said bail.

18. In a typewriting machine, the combination with a ribbon-vibrator and a universal bar adapted to be operated at typestrokes, of a work-sheet, a connection between said universal bar and said vibrator, and means controlled by said work-sheet to alter said connection.

19. In a typewriting machine, the combination with a platen and types for printing upon said platen, of a ribbon-vibrating mechanism adapted to operate at a typestroke, means for varying the effectiveness of said vibrating mechanism, and a device adapted to be controlled by a work-sheet upon which the printing is being done, to automatically vary said vibrating mechanism.

20. In a typewriting machine, the combination with a traveling platen carriage and types for printing upon the platen, of a ribbon-vibrating mechanism, relatively to which the carriage travels, adapted to be operated at a type-stroke, and a device adapted to be controlled by a work-sheet upon which the printing is being done, to automatically control said vibrating mechanism, said device comprising a feeler traveling with the typewriter carriage to bear against the work-sheet.

21. In a typewriting machine, the combination with a traveling platen carriage and types for printing upon the platen, of a ribbon-vibrator adapted to operate at a typestroke, a feeler adapted to bear against a work-sheet upon said platen, and a bail adapted to control said vibrator extending along the travel of said carriage and adapted to be moved by said feeler from one position to another.

22. In a typewriting machine, the combination with a traveling platen and types for printing upon said platen, of a ribbon-vibrator adapted to operate at a type-stroke,

a universal bar operated at a type-stroke, a pin upon said vibrator, a shiftable device connected to said universal bar by which the universal bar may engage the pin to vibrate the vibrator, a feeler adapted to engage a work-piece lying against the platen, and means whereby the feeler may move the device relatively to the pin.

23. In a typewriting machine, the combination with a'platen and types for printing upon said platen, of a ribbon-vibrating mechanism adapted to operate at a type-stroke, a work-sheet having an opening therein, and a feeler engaging with said work-sheet and in the opening thereof to vary the effect of said ribbon-vibrating mechanism.

24. In a typewriting machine, the combination with a platen and types for printing upon said platen, of a ribbon-vibrating mechanism adapted to operate at a type-stroke, a work-sheet having an opening therein, and a feeler engaging with said work-sheet and in the opening thereof to render said ribbonvibrating mechanism efiective and inefi'ective.

25. In a typewriting machine, the combination with a platen, of a work-sheet, a ribbon, and means controlled by said worksheet to render said ribbon ineffective.

26. In a typewriting machine, the combination with a platen, of a work-sheet, a rib bon, said work-sheet having an opening therein, and means engaging with the worksheet and the opening therein to render said ribbon effective or ineffective.

, JOHN WALDHEIM.

Vitnesses:

CATHERINE A. NEWELL, EDITH B. LIBBY. 

